题目内容：

完形填空

阅读下面短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

One day, a boy was playing in a garden. He was running after butterflies and trying to catch them. He was very __1__ to see the colorful flowers, too. Then he saw a frog skipping and __2__. As he ran behind the frog, it went into the pond. A cow was eating grass in the garden. He saw how the cow was__3__ grass. A fly then came there and buzzed over the __4__. It swung its tail to make the fly move away. The child clapped and __5__.

The boy was enjoying the beauty of nature. He said,＂Nature is __6__. Its beauty attracts everyone.＂

When he saw a squirrel, he ran after it and __7__ near the bed of roses. He tried to pick some of the roses, but a thorn __8__ his finger. It was very painful. The boy started __9__ and ran to his mother who was in the __10__.

His mother asked him,＂What is the matter?＂The boy said, ＂The thorn of the rose __11__ my finger while I was picking it and now I feel __12__ pain.＂ His mother said,＂That was your __13__. You should not have tried to pick the flower. The flowers are meant to be __14__ and not to be picked. Besides, natural beauty should never be __15__. We should help to protect nature.＂The son said,＂I will __16__ remember what you have just told me, Mom.＂The mother said,＂Let me know what you have __17__ today.＂ Her son explained,＂We should protect __18__ living beings, whether animals or __19__. We should never harm them. We should not harm nature. __20__ we do, it may harm us in the long run, too.＂

1.A. angry         B. bored     C. worried     D. happy

2.A. falling    B. flying     C. jumping     D. running

3.A. washing     B. chewing    C. cleaning     D. damaging

4.A. butterfly     B. boy     C. frog      D. cow

5.A. moved      B. stared     C. laughed     D. escaped

6.A. friendly      B. wonderful    C. different     D. boring

7.A. reached      B. appeared    C. existed     D. drove

8.A. cost      B. changed    C. hurt      D. caught

9.A. checking     B. walking    C. shaking     D. crying

10.A. hospital     B. office     C. house     D. school

11.A. ate      B. pierced    C. tore      D. pulled

12.A. great      B. strange    C. common     D. new

13.A. choice      B. surprise    C. place      D. mistake

14.A. watered    B. planted    C. seen      D. borrowed

15.A. improved    B. harmed    C. reduced     D. forgotten

16.A. always     B. never     C. sometimes    D. hardly

17.A. liked     B. given     C. learnt      D. watched

18.A. no      B. few     C. some      D. all

19.A .gardens     B. plants     C. water      D. stones

20.A. If       B. Though    C. Still      D. So